Effects of Antibiotics on Growth Performance, Immune Response, and Intestinal Microflora of Broilers

ABSTRACT This study was conducted to evaluate the effects of flavomycin, lincomycin, and zinc bacitracin on body growth, morphometery of immune organs, Newcastle disease virus (NDV) and avian influenza virus (AIV) antibody response, intestinal microflora, and feed efficiency of broilers. Forty-five...

Full description

Saved in:
Bibliographic Details
Published in:Pakistan journal of zoology 2022-12, Vol.54 (6), p.2629
Main Authors: Azeem, Shahan, Muneer, Muhammad Akram, Ahmad, Liaquat, Akhtar, Sameera, Pasha, Talat Naseer
Format: Article
Language:English
Subjects:
Analysis
Animal husbandry
Antibiotics
Antibodies
Antibody response
Avian flu
Bacitracin
Bacterial infections
Body weight
Broilers (Poultry)
Chickens
Efficiency
Feces
Feed efficiency
Food and nutrition
Growth
Hemagglutination inhibition
Immune response
Immune system
Immunity
Infectious diseases
Intestinal microflora
Intestine
Laboratories
Lincomycin
Liver
Microbiota (Symbiotic organisms)
Newcastle disease
Physiological aspects
Poultry
Spleen
Thymus
Thymus gland
Vaccines
Viruses
Zinc bacitracin
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:ABSTRACT This study was conducted to evaluate the effects of flavomycin, lincomycin, and zinc bacitracin on body growth, morphometery of immune organs, Newcastle disease virus (NDV) and avian influenza virus (AIV) antibody response, intestinal microflora, and feed efficiency of broilers. Forty-five day-old broiler chickens were randomly divided into five treatments and housed under identical husbandry conditions. Antibiotic-free poultry feed was procured from a commercial feed mill. The antibiotics were mixed in the feed as per the manufacturer's instructions and offered ad libitum to the chickens for the entire study period. The chickens were vaccinated for NDV and AIV. None of the antibiotics adversely affected the development of NDV or AIV hemagglutination inhibition geometric mean titers. Flavomycin and zinc bacitracin did not adversely affect the mean splenic (1.27+0.20 g and 1.21+0.15 g, respectively), thymic (3.42+0.26 g and 3.78+0.48 g, respectively), hepatic (21.78+0.83 g and 23.15+0.37 g, respectively), or bursal (1.55+0.79 g and 1.63+0.21 g, respectively) body weight ratios. However, lincomycin did adversely affect bursal (0.91+0.12 g), but not splenic (1.21+0.23 g), thymic (3.52+0.36 g), or hepatic (23.72+1.78 g) body weight ratios. The total viable bacterial counts per gram of feces before and 120 h after medication were significantly different (p
ISSN:0030-9923
0030-9923
DOI:10.17582/journal.pjz/20210916080919